Sight-feed lubricator.



. No.' 864355. PATENTE AUG. 27, 190?.

P. 15mm-3R.

SIGHT FEED LUBMGATM.

APPLICATION FILED 001210, 1906.

Witnesses.

tant, as it ymay be (placed in the lend :pipe 'P for at ther cylinder othe engine, the only requirement being that it he outside of the chokeplug.. The object of theE check valve is to prevent 'back pressure fromentering any part of the lubricator.

In actual practice the lnbricator that I provide 'is connected betweenthe compressed air reservoir and theq engine cylinder. The lead Cextends to the reservoir' and the lead P1 to the cylinder, and 'it iispreferable, that the lead I" open through the cylinder head. The'receptacle A'is -filled with oil through lthe yfilling plng D, and theneedle vailvie 'H -ismegulated -hy `the adjusting screw fll.. The baokstrolseei the piston -in the cylinder of the compressor forms Va partialvacuum, and ythe oil is forced upwardly', through the .feedpiipe1G,'pastthe needle valve to the nipple K, by atmospheric-or higherI' pressure. YA'ecording to the `set position'o 4the needle valve lihe`oifl vfeed is `governed. The lo'hoke plug prevente the eil being sweptdirectly -roni the rnipple to the cylinder in the form of a spray, 'andallows ad-rop 'of oil to'collect'at rthe nipple endVa'ndzall thelength-.o the sight glass before it is sucked through the choke ping bythe partial yvacuum in the cylinder. By ymeans of the needle valve thesizeof `the drop-of-oil which -is-n-llowedl to oollect can be sightAregulated, and the Jfeed governedsccordingly.

The check valve is simply to prevent any -baok .pressure within theluhricntor on the forward .stroke -o'i the piston. The valve B and itsmechanism, arendapted to maintain :a iconstant desired pressure on thesurface of dille-oil in the oil receptacle. iln `trein line work, ythepressure maintained .in the line. varies I'consid(stably, and 'to make.allowance or this, yand `to maintain the constant pressure on theoill., es ybefore stated the valve is'e'mployed. An outline ofitsoperation 4is as .fell ows 1*' .Nssmninjg thatit slesiifedtomantinfaConstant pres sure oflsay 20 pds., on the surfaceof the oil, the springC4 would be -a 20 pd. tension spring. Consider the pressure Vin the pipeC to be 100 pds. The'valve'is1 l seated When-the pressure in thereceptacle is`20 pds. 40

Immediately the pressuredrops -in the receptacle'lthe piston is pressedforward by the 20 pd.A spring, `and. in

its forward movement strikes the tip of the 'valve stern,andeventuaillynnseats the valve. This cerises a' tend- Y entry toequalization of pressure on either side of" the 45 valve seat, andas'soon as the 'pnessnreicm theismiianeiof theoil `in -thefoilreceptnole'cornes to 20 pals., rtlrieipiston is' forced hsckwzimdy, :andthe valve :again rs'euts -hy virtne of rtlgxe spring \C5. :By tighteningup', ier lees-I ening' the screw ping 103., the tension'fsprlinggpressme50 may be `varied at will. f A'lthoiigh IIshowzfi gldbe'drip valve.,lit=is to `he lenderst'oeclithztt-any othensuita'ble valvefmayheemployed. y*

www cmimssmysvmionis:

v*the 'dil receptacle, having 'an atrae'hmefifor *maintainingmredetenmned -sm'fnce 1p1-assure 'on'fthe oil, lan :an

inner yenlargement within the Iupper 1p0itlo`n of the y'receptz'wle, s1fiilngplug, afgugevglnssfand :i rp cock, of u feed pipe extendingupwarly w'itlin "the receptaclepzmd benr- 60 ing wrlnn the enlargement,a member screwed "to i@he receptacle :me manning =n dnct continuous with@the lee pipe. a nipple -eontnuous with dille duct, ain -ndustableneedle valve within -t'he duct, a sight A:glass ncloslng `the nipple. nlead extendingfromlhe sigh't'glass to the com- 65 presser, Anvclxo'iwprrxg w'lthrri `the" lead, anfd a cheek valve between 'the,dhoke Iphig Asind the compuessoi=, -ns -a'nll 'im' the puupose speoied.

